( 3.44 : ( 0.711 - 0.311) +2 ) х = 190.8
( 3.44 : 0.4 + 2) х = 190.8
( 8.6 + 2) х = 190.8
10..6х = 190.8
х = 190.8 : 10.6
х = 18
( 3.44 : ( 0.711 - 0.311) +2 ) х = 190.8
( 3.44 : 0.4 + 2) х = 190.8
( 8.6 + 2) х = 190.8
10..6х = 190.8
х = 190.8 : 10.6
х = 18